The correct answer is: f(A2) = 0.0300 f(A1) = 0.9997
If 9 in 10,000 newborn babies have the disease, that means that the frequency of recessive homozygous is 9/10000=0.0009.
According to Hardy-Weinberg equilibrium p2+2pq+q2=1 (p+q=1) where p2 is frequency of dominant homozygous (only p is dominant allele), 2pq is frequency of heterozygous and q2 is the frequency of recessive homozygous (only q is the frequency of recessive allele). This means that q2=0.0009 and (A2) q=0.03. p (A1)=1-0.03=0.97
What are the two great controlling systems of the body?
Brain and heart is the answer
The body's two great controlling systems are the nervous system, which transmits signals between different parts of the body, and the endocrine system, which controls bodily functions using hormones.
Explanation:The two great controlling systems of the body are the nervous system and the endocrine system.
The nervous system is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body. It includes both the Central nervous system and Peripheral nervous system. The central nervous system is made up of the brain and spinal cord and the peripheral nervous system is made up of the Somatic and the Autonomic nervous systems.
The endocrine system, on the other hand, is a collection of glands that produce hormones to regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things
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When you feel cold, there are sensors in your skin that tell the brain you need to warm up. The brain sends messages, by way of nerves, to the muscles in your body causing them to contract and relax very quickly resulting in a shiver. The movement of the muscles during a shiver generates heat which can be used to warm up the surrounding tissues. Which characteristic(s) of life is being represented during this action?
Shivering is one trigger reaction from the brain which causes your muscles contract and expand in speedy bursts as an impulse to warm your body to protect it from illness and hypothermia.
This characteristic of life is known as maintaining a balance inside the body or cells of organisms and called homeostasis.
The characteristic of life that is being represented during this reaction is known as responding to stimuli and maintaining homeostasis.
What is Homeostasis?Homeostasis may be defined as a process through which an organism is inclined to maintain stability while adjusting to conditions that are best for its survival. It is a state of balance among all the body systems required for the body to survive and function correctly.
This action significantly responding the effect of cold from external stimuli by producing heat to keep your body at the average range of internal temperature. This sense of action and responsibility is shown through the process of homeostasis.
Therefore, the characteristic of life that is represented during this reaction is known as responding to stimuli and maintaining homeostasis.
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The question is incomplete, probably the missing options of the question are as follows:
respond to stimulimaintain homeostasisgrowth and adaptationrespond to stimuli and maintain homeostasisColor blindness is a recessive trait. The gene for color blindness is on the X-chromosome. The family tree below shows the trait of color blindness. The only unknown is the mother in the first generation. What is true about the mother?
B,
since males only need one recessive trait for it to show, and the father is not colorblind, the mother at least has to be a carrier for the colorblindness trait.
The true statement about the mother of this family tree is that she is a carrier for color blindness.
The correct option is (B).
What is color blindness?Color blindness is a disability in which you are unable to see colors normally. Color deficiency is another name for it.
It is a condition in which a person is unable to distinguish between different colors.
The most common colors are greens and reds, but it can also happen with blues.
This condition is only dominant in males, but females carry this disability as recessive carrier, so they can transfer this gene to the next generation.
Thus, option (B) she is a carrier for color blindness is correct.
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Which of the following groups in the Domain Archaea require high salt concentrations for survival?
hyperthermophiles
halophiles
Archaezoa
methanogens
The correct answer is: halophiles
Halophiles on Greek means "salt-loving", so organisms that belong to this group are extremophiles (survive in extreme environment) that live in high salt concentration. Halophiles usually belong to Archaea, but can be found in Bacteria domain and sometimes even Eukarya.
Halophiles can survive on very salty environments (with a concentration of salt that is five times greater than the salt concentration of the ocean.
Describe how the role of phloem would be affected if the leaves start to die off. Tell what phloem does in a plant.
Describe how phloem is affected if the leaves start to die off. (3 points) The phloem is effected by the deprivation of water from the disease of the tree, as a result the metabolism of the plant will shift down ward causing the phloem to decrease due to the dying of the leaves.
The role of phloem which transports sugars and nutrients within a plant, will be diminished if the leaves start to die due to reduced photosynthesis and sugar production. Stomata are vital for transpiration and photosynthesis, influencing both water transport through xylem and nutrient transport via phloem.
Explanation:If the leaves of a plant start to die off, the role of the phloem would be affected significantly. The primary function of phloem in plants is to transport sugars and nutrients produced during photosynthesis from the leaves to various parts of the plant, including the roots and growing tissues. This process is known as translocation. When the leaves begin to die, photosynthesis decreases, which leads to a reduction in the production of these photosynthates (sugars). Consequently, there will be fewer sugars for the phloem to transport, which can impact the growth and overall health of the plant.
In plant classification, both xylem and phloem are found in vascular plants, which include seedless vascular plants, gymnosperms, and angiosperms. While phloem carries nutrients and sugars from the leaves to the rest of the plant, xylem transports water and minerals from the roots upwards to the leaves. The xylem relies on transpirational pull, a process where water evaporates from the leaves through structures known as stomata, generating a negative pressure that draws more water from the roots through the xylem vessels.
Stomata are crucial for photosynthesis and gas exchange but also play an important role in regulating water loss. When functioning correctly, stomata can open and close to control transpiration and hence the transpirational pull. Without properly functioning stomata and guard cells, a plant would not be able to regulate water loss efficiently, which could lead to dehydration and impaired nutrient transport.
Before being transported, vladek translates a package for another prisoner. this prisoner is now jewish. what other reasons could someone be transported to concentration camps?
Final answer:
The Holocaust targeted not only Jews but also other groups deemed undesirable by the Nazis, including criminals, Romani, and political enemies. Victims faced forced labor, extermination, and inhumane conditions in concentration camps. This systemic persecution highlights the broader aspect of Nazi oppression aimed at creating a 'Jew-Free' Europe.
Explanation:
During the Holocaust, the Nazi regime targeted not only Jews but also various other groups for deportation to concentration camps for reasons beyond religious identity. These groups included regular criminals, perceived enemies of the Nazi state, Romani people, and individuals caught resisting Nazi policies or participating in activities deemed hostile. Concentration camps housed a complex social hierarchy, where non-Jewish German criminals often assumed supervisory roles over Jewish prisoners, who were subjected to forced labor, starvation, and mass executions.
Within the vast network of camps, which encompassed both work and extermination facilities, prisoners were categorized and treated based on their racial, political, or criminal status. The Einsatzgruppen, SS operational squads, played a crucial role in executing enemies and undesirables largely among the Jewish population following the German invasion of Poland. Individuals from occupied territories were forcibly relocated into ghettos before being transported to camps, where many faced inhumane conditions leading to death or were sent directly to gas chambers.
The Holocaust's complexity extends beyond the extermination of Jews, highlighting the broader spectrum of Nazi persecution against those considered undesirable. This systematic oppression and murder demonstrate the regime's attempt to create a Judenrein ("Jew-Free") Europe, which eventually culminated in the mass murder known as the Holocaust.
Dna partially unwinds as the hydrogen bonds between complementary bases are broken. the enzyme responsible for this is:
The enzyme responsible for that is DNA helicase.
What are the three amphipathic lipids are present in the cell membrane?
phospholipids, glycolipids, and sterols
Phospholipids, cholesterol,glycolipids
_____ include prokaryotic autotrophs that float near the surface of water and are the basis of the food chain.
The correct answer is: Phytoplankton
Phytoplankton is an autotrophic organismthat lives in water and it is incapable of swimming against the water current. They can be found in all water systems, oceans, seas and freshwater basin ecosystems. Phytoplanktons are prokaryotic, usually single-celled organisms, bacteria or protists. The most common kinds are cyanobacteria, dinoflagellates, green algae, and coccolithophores.
If Marie and Calvin dissolve 50 grams of KBr in 100 grams of water at 90oC, the solution is A) saturated B) semisaturated C) supersaturated D) unsaturated
Answer:
Its D. Unsaturated on USATestprep. By the way, there is no such thing as semisaturated.
Answer: Option (D) is the correct answer.
Explanation:
It is known that density of water or 100 grams of water is 1 g/ml. As density is mass divided by volume then it is known that in 100 grams of water 99.2 grams of KBr can be dissolved at [tex]90^{o}C[/tex].
Therefore, it is obvious that solution will be unsaturated because 50 grams of KBr will completely dissolve in it.
As saturated solution is a solution which is unable to dissolve more solute. Whereas a solution is unsaturated when solute dissolves in it until the saturation point.
Hence, we can conclude that if Marie and Calvin dissolve 50 grams of KBr in 100 grams of water at 90oC, the solution is unsaturated.
One of the functions of the respiratory system is to rid the body of co2. Where does the co2 come from?
The CO2 comes from the atmosphere. It is dissolved within our blood cells and is breathed out through respiration
What is the largest source of energy in an ecosystem
the largest source of energy would be the sun
Final answer:
The largest source of energy in an ecosystem is sunlight, which is harnessed by plants through photosynthesis and then transferred through the food chain.
Explanation:
The largest source of energy in an ecosystem is sunlight. Sunlight enters the ecosystem through photosynthesis, a process carried out by plants, which are the primary producers. During photosynthesis, plants convert solar energy into chemical energy stored in glucose. Herbivores obtain energy by eating plants, and this energy is then transferred to carnivores when they consume herbivores. Decomposers break down organic matter from plants and animals, returning nutrients to the ecosystem, but do not typically add energy to it. Thus, the flow of energy through an ecosystem begins with sunlight, which is transformed and transferred through the food chain.
Which of the following phenomena will be observed if a cell's membrane is pierced?
(a) the membrane reseals
(b) the membrane collapses
(c) a tear is formed
(d) the membrane expands
a) the membrane reseals
The membrane reseals, The correct answer is A.
Which of the following is a protein maintained at constant levels throughout the cell cycle that requires cyclinto become catalytically active?
A) PDGFB) MPFC) protein kinaseD) cyclinE) Cdk
The answer is; E
CDK is only active when they bind cyclin. In the CDK-cyclin complex, they are able to phosphorylate their substrates on serines and threonines. Particular CDKs are specific to their cell cycle phase. CDKs have maintained more or less constant levels in a cell and the cyclin levels are what fluctuate.
Cdk, or Cyclin-Dependent Kinase, is a protein that is maintained at constant levels throughout the cell cycle and requires cyclin to become catalytically active. It is a key regulator of the cell cycle.
Explanation:The protein that is maintained at constant levels throughout the cell cycle and requires cyclin to become catalytically active is Cdk (Cyclin-Dependent Kinase).
Cdks are a type of protein kinase and are key regulators of the cell cycle. They are present in the cell at constant concentrations and their activity is controlled by the synthesis and degradation of their regulatory subunits, the cyclins.
As cyclin levels increase, the Cdk-cyclin complexes are formed and become active, which helps push the cell through different stages of the cell cycle.
The protein that requires cyclin to become catalytically active and is maintained at constant levels throughout the cell cycle is protein kinase.
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Which one of the following remains intact after extensive decomposition and can be used to assist in personal identification of remains?
A. Blood
B. Hair
C. Bones
D. Muscle structure
Final answer:
Bones remain intact after extensive decomposition and can assist in personal identification of remains.
Explanation:
Among the options provided, option C. Bones remain intact after extensive decomposition and can be used to assist in personal identification of remains. Blood, hair, and muscle structure are not as durable and don't preserve as well over time, especially in conditions conducive to decomposition.
Bones are organs in the body made up of connective tissue. The connective tissue is hardened by mineral deposition, which is why bone is rigid. In a living body, bone contains two distinct layers: compact (cortical) bone on the outer layer and spongy (trabecular) bone on the inner layer. These layers help with the macroscopic identification of bones.
For example, in a fire scene, bones can break into pieces and be mistaken for other materials. However, forensic anthropologists can recognize the anatomical and layered structure of bone to distinguish it from other substances.
What brings the proper amino acid to the ribosome
jjjjjjjkjkjkjkjljlkjl
Transportation water and minerals from the roots to the leaves in plant is through
Osmotic movement from the roots to the leaves
Which statement about the kidney and water is correct?
The kidney removes some water from the blood by filtration, after which water is not reabsorbed.
The kidney first removes some water from the blood by reabsorption, and then returns water to the blood by filtration.
The kidney removes water from the blood by reabsorption only; water is not removed by filtration.
The kidney first removes some water from the blood by filtration, and then returns water to the blood by reabsorption.
Answer:
The kidney first removes some water from the blood by filtration, and then returns water to the blood by reabsorption.
How does a selectively permeable membrane affect diffusion?
- All molecules move from a lower concentration to a higher concentration.
- Only some molecules move from a higher concentration to a lower concentration.
- Only some molecules move from a lower concentration to a higher concentration.
- All molecules move from a higher concentration to a lower concentration.
Answer:
- Only some molecules move from a higher concentration to a lower concentration.
Explanation:
Selective permeability of the membrane means that membrane regulates which molecules (ions, substances) and how much of them can pass through it. Permeabilty of the membrane is determinated by its structure (hydrophobic heads and hydrophilic tails, cholesterol), temperature
The simplest form of transport through membrane is diffusion, passive transport of the molecule down its concentration gradient 9from higher to lower concentration). Some molecules can move down their concentration gradients directly, some have to pass through membrane proteins in a process called facilitated diffusion while others require energy and use active transport.
Glucocorticoids do which of the following?
1. promote the release and breakdown of fatty acids
2. increase blood glucose levels
The answer is 2
Medications known as glucocorticoids (prednisone and cortisone, etc). are known to have a side effect that increases blood glucose (sugar) since these drugs promote glucose production in the liver.
Select the statement that is true concerning primary teeth.
There are 27 primary teeth, and the molars are permanent.
There are 32 primary teeth, and most children lose these teeth due to decay because they are never very strong.
There are 20 primary teeth, and by 24 months of age most children have all 20.
There are 24 primary teeth, and no new primary teeth appear after 13 months.
The correct answer is: There are 20 primary teeth, and by 24 months of age most children have all 20.
Primary teeth also known as deciduous teeth, milk teeth, are the first set of temporary teeth in the growth development of humans. They develop during the embryonic stage of development, become visible in the mouth during infancy (erupt) and usually get replaced by permanent teeth around age six (the first tooth). The primary teeth consist of 4 central incisors (one in each quadrant), 4 lateral incisors, 4 canines, 4 first molars, and 4 secondary molars.
There are 20 primary, or 'baby', teeth that most children have by the age of 24 months. These temporary teeth eventually fall out and are replaced by 32 permanent adult teeth.
Explanation:The true statement concerning primary teeth is: There are 20 primary teeth, and by 24 months of age most children have all 20.
Primary teeth, also known as 'baby teeth', begin to erupt in infants around 6 months of age and continue until about 24 months of age. These teeth are temporary and eventually fall out to be replaced by permanent teeth, which number 32 in total in an adult mouth.
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Given the history of corn in the western hemisphere, what would be the best strategy for survival of the Zea species?
The answer is C) Increase genetic variation and breed plants to contain the wild variety.
It is important to understand the differences between chemical and physical changes which process is an example of a physical change
Answer:
The question lacks options, the options are:
A) Water turns to steam when boiled over a Bunsen burner.
B) Carbon combines with oxygen to form carbon dioxide gas.
C) Water breaks down into hydrogen and oxygen gases.
D) Limestone breaks down into lime and carbon dioxide when heated.
The answer is A
Explanation:
Changes occur from one state of matter to another. This change can either be physical or chemical. A physical change is a change in which no new substances are formed as products and it can be reversed to form the reactants again. Chemical change, on the other hand, forms new substances as products by the rearrangement of chemical bonds in the resulting molecule.
In the case of this question, water turning into steam when heated, a process called evaporation is an example of physical change because water, which is a liquid is just changing its state to gaseous (steam). Hence, no new substance is formed. The steam can easily be reversed back to water via CONDENSATION.
In the other options, new products are formed either by breaking the chemical bonds between molecules or rearranging them. Hence, options B, C and D are examples of chemical change.
Feather color in budgies is determined by two different genes, y and b, one for pigment on the outside and one for the inside of the feather. yybb, yybb, or yybb is green; yybb or yybb is blue; yybb or yybb is yellow; and yybb is white. two blue budgies were crossed. over the years, they produced twenty-two offspring, five of which were white. what are the most likely genotypes for the two blue budgies?
Answer:
bbbb and ybyb
Explanation:
Since blue is dominant and white is recessive,, one blue present will result in blue feathers. byyy will also result in a blue bird.
Answer:
Option E
Explanation:
Please see the attachment
What is the final electron acceptor in the light reactions?
The final electron acceptor is NADP.
The light-dependent reactions is one of the two successive phases that occur during photosynthesis (other is light-independent reactions). The light-dependent reactions use sunlight energy to make the energy storage molecule ATP and the reduced electron carrier NADPH. In the light-independent reactions (also called Calvin cycle), CO2 is absorbed and fixed in order to build three-carbon sugars (glyceraldehyde-3-phosphate) and this process is fueled by, ATP and NADPH from the light reactions.
Will the texture of the puppy’s coat resemble that of either of its parents?
no the puppy''s coat does not resemble that of either of its parents
Han is a 48 year old diabetic with hyperlipidemia and high triglycerides. he has not tolerated statins related to muscle pain. he warrants a trial of a:
THE ANSWER IS FIBRIC ACID DERIVATIVE
Han could benefit from a trial of a fibrate drug due to high triglycerides and intolerance to statins. These drugs can effectively lower triglyceride levels but should be used under close supervision due to potential side effects.
Explanation:Han, being a 48-year-old diabetic with hyperlipidemia and high triglycerides, and having developed intolerance to statins due to muscle pain, could benefit from a trial of a fibrate drug. Fibrate drugs, such as Fenofibrate or Gemfibrozil, are particularly effective in lowering triglyceride levels and can also modestly reduce LDL ('bad') cholesterol and increase HDL ('good') cholesterol. However, their use should be monitored by a healthcare provider due to potential side effects and contraindications. As the effectiveness and safety can vary individually, the decision should involve a thorough discussion between Han and his healthcare provider.
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Which of the following factors does not affect membrane permeability?A) The polarity of membrane phospholipids.B) Temperature.C) The amount of cholesterol in the membrane.D) The saturation of hydrocarbon tails in membrane phospholipids.
The correct answer is: A) The polarity of membrane phospholipids
Factors that affect membrane permeability are
1. Chemicals :
Some of the organic solvents such as chloroform and ethanol can dissolve the membrane and thus, destroy the selective permeability of the membrane.
2. Temperature :
Too high temperatures denature the protein that are in the structure of the membrane destroying its selective permeability. On the other hand, too low temperature slows down molecule movements and the permeability decreases.
3. Cholesterol:
Increases the permeability by reducing the barrier formed by phospholipids’ heads
4. The saturation of hydrocarbon tails in membrane phospholipids:
Saturated fatty acids decrease permeability of the membrane because they get very close together, which makes it harder for the molecules to pass through.
The abdominal wall muscle that forms the inguinal ligament is the _______________.
The answer is oblique
Final answer:
The external oblique muscle is responsible for forming the inguinal ligament, which runs from the anterior superior iliac spine to the pubic tubercle.
Explanation:
The abdominal wall muscle that forms the inguinal ligament is the external oblique. The external oblique muscle is the most superficial of the three flat muscles of the anterolateral abdominal wall. When it contracts, its fibers, which run inferiorly and medially, create various movements and provide trunk rotation. This muscle also plays a role in compressing the abdominal contents and protecting the internal organs. A thickened, folded lower margin of the external oblique aponeurosis becomes the inguinal ligament, which is a key structure in the groin. The inguinal ligament runs from the anterior superior iliac spine to the pubic tubercle.
Axel draws a cladogram containing a zebra, bear, lion, and tiger. He uses the physical appearances of the animals to decide where they should be placed in his cladogram. Is he correct? Why or why not?
A cladogram containing a zebra, bear, lion, and tiger, should look like this:
mammalia
I I
carnivora perissodactyla
I I I
arctoidea feliformia equidae
I I I
ursidae felidae equini
I I I
ursus pantherinae equus
I
panthera
I I
panthera tigris panthera leo
All four animals are part of the mammals, thus it is the closest relation they all have. Further, the lion, tiger, and bear are part of the carnivores, while the zebra is part of herbivores, thus purring the first three to be more closely connected. The bear than diverges into its own family, while the lion and tiger remain in the same, thus making them the most closely related. So we have the lion and tiger to be the closest, than comes the bear, being closer to them then to the zebra, and then comes the zebra which is connected with the other three much further back in the past.